[R-390] Tell me about Single Sideband Converters

Patrick brookbank at triad.rr.com
Tue Jun 28 17:56:12 EDT 2005


Mine CV-591A/URR serial 3082 was manufactured by The Technical Materiel 
Corporation, Mamaronek NY contract 81020. Have had it for many years and 
after replacing all of the capacitors with orange drops and some resistors 
that looked a little overheated has worked wonderfuly, it is a pleasure to 
use it.
----- Original Message ----- 
From: "federico" <federico at dottorbaldi.it>
To: "Kenneth" <crips01 at msn.com>; "'Craig Westerman'" 
<westerman at cableone.net>; "'R-390 List'" <r-390 at mailman.qth.net>
Sent: Tuesday, June 28, 2005 5:40 PM
Subject: RE: [R-390] Tell me about Single Sideband Converters


> Hi to all,
>          my is a CV-1982/TSC-26 by KAHN LABORATORIES RESEARCH INC. with 
> manu
> nuvistors on board. You can see on my website. 73 de Federico IZ1FID
>
>
> Visit my website entirely devoted to military radio and aircraft
> clocks :
>
> www.dottorbaldi.it/militaryradio
>
> ---------- Original Message -----------
> From: "Kenneth" <crips01 at msn.com>
> To: "'Craig Westerman'" <westerman at cableone.net>, "'R-390 List'" <r-
> 390 at mailman.qth.net>
> Sent: Tue, 28 Jun 2005 13:38:33 -0600
> Subject: RE: [R-390] Tell me about Single Sideband Converters
>
>> This should be an interesting thread.  In all of the years I have
>> been on this list I do not remember an in depth discussion of these
>> hollowstate Side band adapters. I only have experience with my
>> Eldico SBA-1. I would like to learn about the other such units
>> manufactured.
>>
>> The CV-591A/URR is a Collins made unit.  As you know most anything 
>> Collins
>> puts a premium on the price working or not.  The only unit I can
>> comment on is the Eldico Electronics SBA-1 adapter I have.  The
>> bottom line is works great it makes the tuning of SSB on an R390A
>> just like any modern rig.  I am sure the engineering on the Collins
>> adapter might be better; I have not been able to do an A-B
>> comparison. Being able to tune a side band phone round table without
>> having to ride herd of the RF gain is really nice. The SBA-1 has a 4
>> watt audio amp, a noise blanker, which isn't as good as the one on
>> the R390A which really is no surprise, a notch filter, and a AVC setting
>> fast/slow, as well as the usual controls for audio volume, mode, IF
>> gain, standby/receive. On the back panel there are connections for
>> AVC, muting, speaker connections For 4 and 600 ohms, and IF signal
>> inputs for hi and low impedance.
>>
>> >From a boatanchor pilot mind set I like these units because they where a
>> contemporary hollowstate solution to the SSB deficiencies of the R390A.
>> As I have reported the when you place the SBA-1 on top of the R390A the
>> controls on the SBA-1 match the flow of the controls on radio.
>>
>>                        Ken de W7ITC
>>
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> ------- End of Original Message -------
>
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